WO2009108326A3 - Systems and methods for design and construction of nmr transceiver circuits - Google Patents

Systems and methods for design and construction of nmr transceiver circuits Download PDF

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Publication number
WO2009108326A3
WO2009108326A3 PCT/US2009/001206 US2009001206W WO2009108326A3 WO 2009108326 A3 WO2009108326 A3 WO 2009108326A3 US 2009001206 W US2009001206 W US 2009001206W WO 2009108326 A3 WO2009108326 A3 WO 2009108326A3
Authority
WO
WIPO (PCT)
Prior art keywords
nmr
matching network
impedance matching
impedance
construction
Prior art date
Application number
PCT/US2009/001206
Other languages
French (fr)
Other versions
WO2009108326A2 (en
Inventor
Nan Sun
Donhee Ham
Original Assignee
President And Fellows Of Harvard College
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by President And Fellows Of Harvard College filed Critical President And Fellows Of Harvard College
Priority to US12/919,215 priority Critical patent/US8643368B2/en
Publication of WO2009108326A2 publication Critical patent/WO2009108326A2/en
Publication of WO2009108326A3 publication Critical patent/WO2009108326A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
    • G01R33/3628—Tuning/matching of the transmit/receive coil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/30—Sample handling arrangements, e.g. sample cells, spinning mechanisms
    • G01R33/302—Miniaturized sample handling arrangements for sampling small quantities, e.g. flow-through microfluidic NMR chips
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
    • G01R33/3607—RF waveform generators, e.g. frequency generators, amplitude-, frequency- or phase modulators or shifters, pulse programmers, digital to analog converters for the RF signal, means for filtering or attenuating of the RF signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
    • G01R33/3621—NMR receivers or demodulators, e.g. preamplifiers, means for frequency modulation of the MR signal using a digital down converter, means for analog to digital conversion [ADC] or for filtering or processing of the MR signal such as bandpass filtering, resampling, decimation or interpolation

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

The Rabi frequency of oscillation of the nuclear magnetization vector of a sample in an NMR system may be controlled by modifying only the duty cycle of RF pulses delivered to the sample, without modifying the amplitude of the RF pulses, until the energy delivered at the Larmor frequency is adjusted to a desired amount. An impedance matching network between an NMR transceiver and an NMR coil may perform both power matching and noise matching simultaneously. During a transmission mode, the impedance matching network is connected to a transmitter portion of the transceiver, and the impedance of the coil is matched to the driver resistance. During a receiver mode, the impedance matching network is disconnected from the transmitter portion so that the impedance matching network remains connected only to the receiver portion, and signal-to-noise ratio in received NMR signals is maximized.
PCT/US2009/001206 2008-02-25 2009-02-25 Systems and methods for design and construction of nmr transceiver circuits WO2009108326A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/919,215 US8643368B2 (en) 2008-02-25 2009-02-25 Systems and methods for design and construction of NMR transceiver circuits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3118008P 2008-02-25 2008-02-25
US61/031,180 2008-02-25

Publications (2)

Publication Number Publication Date
WO2009108326A2 WO2009108326A2 (en) 2009-09-03
WO2009108326A3 true WO2009108326A3 (en) 2009-12-10

Family

ID=41016650

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/001206 WO2009108326A2 (en) 2008-02-25 2009-02-25 Systems and methods for design and construction of nmr transceiver circuits

Country Status (2)

Country Link
US (1) US8643368B2 (en)
WO (1) WO2009108326A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8988076B2 (en) * 2011-12-20 2015-03-24 Schlumberger Technology Corporation Integrated NMR transceiver array
US10359378B2 (en) 2012-05-14 2019-07-23 Board Of Trustees Of Michigan State University Nuclear magnetic resonance apparatus, systems, and methods
US8965280B2 (en) * 2012-09-04 2015-02-24 Infineon Technologies Ag Chip card communication arrangement and chip card communication circuit
WO2015066005A1 (en) 2013-10-28 2015-05-07 Schlumberger Technology Corporation Integrated circuit for nmr systems
US11073633B2 (en) 2014-08-27 2021-07-27 Schlumberger Technology Corporation Nmr asic
US9870854B1 (en) * 2015-07-20 2018-01-16 The Government Of The United States Of America As Represented By The Secretary Of The Navy Methods of assembling and using an adjustable inductor
US10794971B2 (en) * 2017-03-27 2020-10-06 Waveguide Corporation Duty-cycle control for power-level adjustment in switch-mode power amplifiers
ES2937816T3 (en) 2017-03-27 2023-03-31 Waveguide Corp Sensor interfaces
US10739424B2 (en) * 2017-03-27 2020-08-11 Waveguide Corporation Output impedance calibration of integrated switched-mode power amplifiers
CN110710104B (en) * 2017-03-27 2023-09-22 波导公司 Integrated switch mode power amplifier
US10326491B2 (en) * 2017-05-23 2019-06-18 Taiwan Semiconductor Manufacturing Company Ltd. Transceiving device
US11506810B2 (en) 2018-12-28 2022-11-22 Schlumberger Technology Corporation Miniaturized NMR tool electronics
EP3978943A1 (en) * 2020-10-01 2022-04-06 Koninklijke Philips N.V. Radio frequency receiver system with adjustiable impedance matching for an mri apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10213557A (en) * 1997-01-17 1998-08-11 Heishun Sai Agricultural product nondestructive inspection method utilizing hydrogen nuclear magnetic resonance, and magnet box and device therefor
US6100687A (en) * 1996-06-11 2000-08-08 California Institute Of Technology Force-detected magnetic resonance independent of field gradients

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6778847B2 (en) * 2002-05-03 2004-08-17 The Trustees Of Columbia University In The City Of New York System and method for MRI tagging using spatial modulation of magnetization
US7791440B2 (en) * 2004-06-09 2010-09-07 Agency For Science, Technology And Research Microfabricated system for magnetic field generation and focusing
US7382128B2 (en) * 2006-02-24 2008-06-03 Kenergy, Inc. Magnetic resonance imaging system with a Class-E radio frequency amplifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6100687A (en) * 1996-06-11 2000-08-08 California Institute Of Technology Force-detected magnetic resonance independent of field gradients
JPH10213557A (en) * 1997-01-17 1998-08-11 Heishun Sai Agricultural product nondestructive inspection method utilizing hydrogen nuclear magnetic resonance, and magnet box and device therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LESKOWITZ, G. M. ET AL.: "Force-detected magnetic resonance without field gradients", SOLID STATE NUCLEAR MAGNETIC RESONANCE, vol. 11, 1998, pages 73 - 86 *

Also Published As

Publication number Publication date
WO2009108326A2 (en) 2009-09-03
US20110057654A1 (en) 2011-03-10
US8643368B2 (en) 2014-02-04

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